Abstract:
:After an initial benefit, non-small-cell lung cancer (NSCLC) patients receiving therapy with tyrosine kinase inhibitors develop drug resistance through a variety of mechanisms. Among these, tumor histology changes are a mechanism of acquired resistance in epidermal growth factor receptor-mutated and anaplastic lymphoma kinase-rearranged NSCLC cases. The current availability of therapeutic approaches to overcome tyrosine kinase inhibitor resistance in oncogenic-driven lung cancers justifies secondary tumor biopsy in these patients. On the other hand, little is known about the mechanism of disease progression in non-oncogenic driven NSCLC. Nevertheless, NSCLC lacking "druggable" genetic alterations are not considered for secondary biopsy, as it is commonly believed that these tumors cannot develop histologic or molecular changes. Herein, we report two paradigmatic cases of wild-type NSCLC showing histologic "change" on secondary biopsy, allowing for a successful switch in therapeutic strategy.
journal_name
Thorac Cancerjournal_title
Thoracic cancerauthors
Mengoli MC,Orsi G,Lococo F,Grizzi G,Barbieri F,Bertolini F,Rossi G,Novello Sdoi
10.1111/1759-7714.12416subject
Has Abstractpub_date
2017-07-01 00:00:00pages
359-362issue
4eissn
1759-7706issn
1759-7714journal_volume
8pub_type
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